diff --git a/docker/conf/indexer_storage.yml b/docker/conf/indexer_storage.yml
index 59432ea..361e545 100644
--- a/docker/conf/indexer_storage.yml
+++ b/docker/conf/indexer_storage.yml
@@ -1,12 +1,12 @@
 indexer_storage:
-  cls: local
+  cls: postgresql
   db: postgresql:///?service=swh-indexers
   journal_writer:
     cls: kafka
     brokers:
       - kafka
     prefix: swh.journal.indexed
     client_id: swh.idx_storage.journal_writer
     producer_config:
       message.max.bytes: 1000000000